Passage Summary: The author argues that beauty isn't just a matter of opinion. Their proof is that we still find ancient art beautiful today, suggesting that the standards for what looks good haven't really changed over thousands of years.

Conclusion: The claim that beauty is subjective is incorrect.

Reasoning: Ancient artistic works that were considered beautiful in their own time are still considered beautiful by our modern standards.

Analysis: The author's argument relies on the observation of 'similarity' across time, but it ignores the possibility of selection bias. To weaken this, look for an answer that suggests we are only seeing a non-representative sample of ancient art—perhaps only the pieces that happen to fit our modern tastes survived. Another way to attack this is to suggest that while we find the art beautiful, we might be doing so for entirely different reasons than the ancients did. If our reasons for liking the art are different, the 'standard' isn't actually the same, which would undermine the author's claim of an objective, unchanging standard.